393938063 has 4 divisors (see below), whose sum is σ = 393977760. Its totient is φ = 393898368.

The previous prime is 393938057. The next prime is 393938087. The reversal of 393938063 is 360839393.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 393938063 - 2²² = 389743759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393938663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9818 + ... + 29736.

It is an arithmetic number, because the mean of its divisors is an integer number (98494440).

Almost surely, 2^393938063 is an apocalyptic number.

393938063 is a deficient number, since it is larger than the sum of its proper divisors (39697).

393938063 is a wasteful number, since it uses less digits than its factorization.

393938063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39696.

The product of its (nonzero) digits is 314928, while the sum is 44.

The square root of 393938063 is about 19847.8730094688. The cubic root of 393938063 is about 733.0652762479.

The spelling of 393938063 in words is "three hundred ninety-three million, nine hundred thirty-eight thousand, sixty-three".